Any chance that dud shells/torpedoes/what have you, are implemented?
Also component malfunctions? Like when the prince of Wales had teething problems, causing the turret or gun to not work when it first started its attack on the Bismark?
Edit: Y turret jammed. "Wikipedia"
Prince of Wales also survived a 15" dud shell from Bismark hitting amidships, ending up near the after boiler rooms. Talk about a 2 for 1.
Maybe there should be a reliability aspect. Like new and very old ships, repaired damage from previous battles should suffer from reliability issues. Or rushing construction of a ship.